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一、聚酯薄膜的一段情况我们使用的是常州生产的厚度为0.1毫米的聚酯薄膜,并经过研磨法处理的。优点是:机械强度高,透明度好,伸缩性小,耐水耐化学品腐蚀,不蛀不霉,便于摄带、保管、存放。适合战备和野外勘测设计的需要。原图着墨后,可以不经过描腊纸图,直接进行兰晒作业,缩短工艺过程,且能提高成图精度,及时为铁路勘测设计提供兰图。
First, a period of polyester film We use Changzhou produced thickness of 0.1 mm polyester film, and after grinding method of treatment. The advantages are: high mechanical strength, good transparency, low scalability, water and chemical corrosion resistance, not bore no mold, easy to take, storage, storage. Suitable for war preparation and field survey design needs. After the original image is inked, it is possible to directly carry out the blue sunning work without drawing the wax paper, shorten the process, and improve the accuracy of the drawing, so as to provide the blueprint for the railway survey and design in time.